Two Types of Flares Were Tested for Their Burning Times $\text { Brand } \mathrm { X }$

question 19

Essay

Two types of flares were tested for their burning times (in minutes).Sample results are given below. $\text { Brand } \mathrm { X }$ $\text { Brand } \mathrm { Y }$ n = 35 n = 40 $\overline{x}$ = 19.4 $\overline{x}$ = 15.1
s = 1.4 s = 0.8
Refer to the sample data to test the claim that the two populations have unequal means.Carry out the test with a 1% significance level.

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Definitions:

Freeplay

The amount of slack or movement allowed in a part or mechanism before engagement or resistance begins, often critical in mechanical linkages and controls.

Dial Indicator

A precision measuring tool used to measure small distances or angles with high accuracy.

Telescoping Gauges

Measuring instruments used to determine the internal size of a hole, slot, or similar feature, capable of adjusting to the size within a specified range.

Thrustline

The imaginary line in a vehicle that represents the direction of the force that is applied to propel the vehicle forward.